package linyetao.rbac.service;

import linyetao.rbac.domain.dto.DeptDto;
import linyetao.rbac.domain.entity.Dept;
import linyetao.rbac.domain.vo.DeptVo;
import linyetao.rbac.domain.vo.Result;

import java.util.Arrays;

public class DeptService {
    public static int DATA_SIZE = 100;
    public static Dept[] data = new Dept[DATA_SIZE+1];
    public static int idCounter = 1;

    public static Dept createEntity(DeptDto dto, int id) {
        Dept dept = new Dept(dto.name, dto.phone);
        dept.id = id;
        return dept;
    }

    public static void updateEntity(DeptDto dto, Dept dept) {
        dept.name = dto.name;
        dept.phone = dto.phone;
    }


    public static Result create(DeptDto dto){
        if(idCounter > DATA_SIZE){
            return Result.failure("创建失败，超出存储容量");
        }
        Dept dept = createEntity(dto, idCounter++);
        data[dept.id] = dept;
        return Result.success("创建成功",null);
    }

    public static Result update(DeptDto dto,int id){
        if(!existsById(id)){
            return Result.failure("更新失败，不存在该数据");
        }
        Dept dept = data[id];
        updateEntity(dto, dept);
        return Result.success("更新成功",null);
    }

   public static DeptVo convertToVo(Dept dept){
        return new DeptVo(dept.id, dept.name, dept.phone);
   }

   public static Result list(){
        DeptVo[] temp = new DeptVo[DATA_SIZE];
        int length = 0;

        for(int i = 1;i<idCounter;i++){
            if (data[i]!=null){
                temp[length++] = convertToVo(data[i]);
            }
       }
        return Result.success("查询成功",Arrays.copyOf(temp,length));
   }

    public static Result delete(int id){
        if (!existsById(id)){
            return Result.failure("删除失败，不存在该数据");
        }
        if (UserService.deptInUse(id)) {
            return Result.failure("删除失败，有⽤户属于该部⻔，不能删除");
        }
        data[id] = null;
        return Result.success("删除成功", null);
    }

    public static boolean existsById(int id) {
        return id >= 1 && id < idCounter && data[id] != null;
    }

    public static Dept findById(int id) {
        if (existsById(id)) {
            return data[id];
        }
        return null;
    }

}
